Tryout keys are a lockpicking tool used to exploit poor tolerances in locks. A collection of keys with custom depth and spacing patterns is produced to manipulate internal components to various positions. In some cases they are capable of rapidly brute-forcing all keying depths for the lock. Because tryout keys are used as normal keys they are generally considered a form of surreptitious entry.
This technique is made possible by a low number of real key differs as a result of poor manufacturing tolerances or key specifications.
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